On-Board Diagnostic Center

Raypak’s MVB comes equipped with a microprocessor-controlled diagnostic control center that displays its information on a 2x20 character LCD display in plain English. This control monitors system safeties, ignition faults and system status, while storing up to 16 reported faults. Raypaks diagnostic center monitors the fault outputs of the Fenwal ignition control. Converting the Fenwal’s flashing lights into real English fault codes that anyone can understand. The control is also equipped with a SPDT dry contact relay output that is switched anytime a safety fault occurs.

This can be used for a heater alarm or a BMS safety interface.

Diagnostic Information

Safety Faults

Ignition Control Faults

• Condensate Drain

• Low Air

• Manual High Limit

• Flame- No CFH

• Auto High Limit

• Ignition Lockout

• Low Water Cut-off

• Low HSI Current

• Vent Pressure

• Low 24VAC

• High Gas Pressure

• Internal Control Fault

• Low Gas Pressure

 

• Controller Alarm

 

• Flow Switch

 

• Blower Switch

 

• Factory Option

 

• External Interlock

 

• Cold Water Run

 

CATEGORY I* BOILERS (TYPE H)

CATEGORY I* WATER HEATERS (TYPE WH)

CATEGORY IV BOILERS & WATER HEATERS (TYPE H & WH)

MVB

 

 

Flow Rates

 

 

 

 

Pressure Drops

 

 

Minimum Flow

Maximum Flow

 

20°F

 

30°F

 

40°F

Model

 

 

 

GPM

￿P FT

￿T °F

GPM

￿P FT

￿T °F

GPM

￿P FT

GPM

￿P FT

GPM

￿P FT

 

504

25

1.1

34

100

11.3

8

42

2.7

28

1.4

N/A

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

754

32

1.7

40

100

13.8

13

63

6.0

42

2.9

32

1.7

 

 

 

 

 

 

 

 

 

 

 

 

 

1104

46

4.1

40

113

18.6

16

92

13.3

62

6.7

46

4.1

 

 

 

 

 

 

 

 

 

 

 

 

 

1504

63

8.0

40

113

22.2

22

N/A

N/A

84

13.3

63

8.0

 

 

 

 

 

 

 

 

 

 

 

 

 

2004

84

16.0

40

113

27.2

30

N/A

N/A

112

26.9

84

16.0

 

 

 

 

 

 

 

 

 

 

 

MVB

 

 

Flow Rates

 

 

 

Pressure Drops

 

 

 

Minimum Flow

Maximum Flow

 

20°F

 

30°F

 

 

Model

 

 

 

 

GPM

￿P FT

￿T °F

GPM

￿P FT

￿T °F

GPM

￿P FT

GPM

￿P FT

 

 

 

 

 

504

50

2.8

17

100

11.3

8

N/A

N/A

28

1.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

754

50

3.5

25

100

13.8

13

64

6.1

42

3.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1104

60

6.3

30

113

18.6

16

90

12.6

60

6.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1504

82

12.6

30

113

22.2

22

N/A

N/A

82

12.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2004

109

25.5

30

113

27.2

29

N/A

N/A

109

25.5

 

 

 

 

 

 

 

 

 

 

 

 

 

MVB

 

 

Flow Rates

 

 

 

 

Pressure Drops

 

 

Minimum Flow

Maximum Flow

20°F

30°F

40°F

Model

GPM

￿P FT

￿T °F

GPM

￿P FT

￿T °F

GPM

￿P FT

GPM

￿P FT

GPM

￿P FT

 

503

25†

1.1

35

100

11.3

9

43

2.8

29

1.4

N/A

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

753

33†

1.9

40

100

13.8

13

65

6.4

43

3.1

33

1.9

 

 

 

 

 

 

 

 

 

 

 

 

 

1003

43‡

3.7

40

113

18.6

15

87

12.0

58

6.0

43

3.7

1253

54‡

6.2

40

113

22.2

19

109

20.9

73

10.2

54

6.2

1503

65‡

9.5

40

113

25.5

23

N/A

N/A

87

16.0

65

9.5

1753

76‡

13.4

40

113

27.2

27

N/A

N/A

101

22.5

76

13.4

2003

87‡

15.2

40

116

30.2

30

N/A

N/A

116

31.9

87

18.9

Boiler Only

*Category I with vertical vent, category III with horizontal venting and no extractor.

† Minimum flow 50GPM for WH hot water supply.

6

‡ Use 30° column as minimum flow for hot water supply.

 

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Raypak 503 manual On-Board Diagnostic Center, Diagnostic Information, Gpm
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503 specifications

The Raypak 503 is a high-efficiency, gas-fired pool heater engineered for optimal performance and longevity. This versatile heater is best suited for residential and commercial pools, spas, or hot tubs, delivering exceptional heat without sacrificing energy efficiency. With a robust design, the Raypak 503 ensures reliable operation in varying temperature conditions.

One of the main features of the Raypak 503 is its advanced heating technology. It utilizes a copper heat exchanger, which is known for its excellent thermal conductivity, allowing the heater to respond quickly to temperature adjustments. This feature ensures that users can maintain their desired pool or spa temperature with ease. The heat exchanger is encapsulated in durable, corrosion-resistant materials, prolonging the unit's lifespan and reducing maintenance costs.

The Raypak 503 is equipped with a digital control panel that provides an intuitive interface for easy temperature settings and monitoring. The precise temperature control allows for accurate heating to meet individual preferences, ensuring a comfortable swimming experience. Additionally, the digital display offers diagnostics and alerts for troubleshooting, facilitating proactive maintenance.

Another notable characteristic is the compact design of the Raypak 503, making it an ideal choice for properties with limited space. With its efficient size, the heater can be integrated seamlessly into existing pool equipment layouts without significant modifications.

Safety is paramount in the Raypak 503, which features multiple safety mechanisms, including a flame rollout switch and automatic shut-off to prevent overheating. These safety attributes enhance user confidence and promote a hassle-free operation.

The Raypak 503 operates quietly, which is a significant advantage for those who favor a serene swimming environment. Its design minimizes noise pollution, allowing swimmers to enjoy their pool experience without the distraction of a loud heater.

For eco-conscious users, the Raypak 503 boasts an environmentally friendly design, meeting stringent emissions standards. Its energy-efficient operation helps to reduce utility bills while minimizing the environmental footprint associated with pool heating.

In summary, the Raypak 503 is a reliable solution for heating pools and spas, combining advanced technology with user-friendly features. Its durable construction, precise temperature control, compact design, safety mechanisms, and energy efficiency make it an exceptional choice for anyone looking to enhance their aquatic experience. This heater exemplifies Raypak's commitment to quality, performance, and customer satisfaction in the pool heating market.
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